Prof. Sangyoon Han

Prof. Sangyoon Han is the Assistant Professor at DGIST (Daegu Gyeongbuk Institute of Science and Technology)


Doctor of Philosophy (Ph.D) in Electrical Engineering and Computer Sciences at University of California, Berkeley, 2016

Bachelor's Degree in Electrical Engineering at Seoul National University, 2010


Research Interests

Silicon photonic switches for next-generation data centers

Chalcogenide photonics for Mid-IR coherent light sources

Brillouin lasers for ultra-fast LIDAR



Collegiate Inventors Competition, 2015

Held at United States Patent and Trademark Office (USPTO) (미국 특허청)
-Graduate bronze medal

Corning Outstanding Student Paper Competition, 2014

Held at Optical Fiber Communication Conference (OFC)
-Finalist (top 6 papers out of 341 papers)


Media Appearances

The Daily Californian, Nov 19th, 2015, “UC Berkeley team wins $10,000 for cloud-storage innovation.”

Huffington Post, Oct 29th, 2015, “2015 Collegiate Inventors Competition to be Held November 16.”

Technically Media, Nov 18th, 2015, “Meet the winners of the 2015 Collegiate Inventors Competition.



Selected publications

D. -G. Kim*, S. Han*, J. Hwang, I. H. Do, D. Jeong, J. -H. Lim, Y. -H. Lee, M. Choi, Y. -H. Lee, D. -Y. Choi, H. Lee, “Universal light-guiding geometry for high-nonlinear resonators having molecular-scale roughness,” arXiv, 2019, 1909.13594. *equal contribution

H. Sattari, T. Graziosi, M. Kiss, T. J. Seok, S. Han, M. C. Wu, N. Quack, “Silicon photonic MEMS phase-shifter,” Optics Express, 2019, 27 (13), 18959-18969.

S. Han, T. J. Seok, C. -K. Kim, R. S. Muller, and M. C. Wu, “Multicast silicon photonic MEMS switches with gap-adjustable directional couplers,” Optics Express, 2019, 27 (13), 17561-17570.

S. J. Yoon, J. Lee, S. Han, C. K. Kim, C. W. Ahn, M. K. Kim, and Y. H. Lee, “Non-fluorescent nanoscopic monitoring of a single trapped nanoparticle via nonlinear point sources,” Nature Communications, 2018, 9 (1), 2218.

D. -Y. Choi, S. Han, J. Hwang, Y. -H. Lee, D. -G. Kim, I. H. Do, D. Jeong, H. Lee, “Chalcogenide-silica hybrid planar platform for high performance nonlinear optic devices,” OSA Laser Congress, 2019, OSA.

S. Han, D. -G. Kim, J. Hwang, I. H. Do, D. Jeong, Y. -H. Lee, D. -Y. Choi, and H. Lee, “Brillouin lasers based on 11 million-Q on-chip chalcogenide resonators without direct etch process,” International Conference on Optical MEMS and Nanophotonics (OMN), 2019, IEEE.


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